'Sanctum'

'Sanctum'

Universal Pictures

The 3D cave-diving thriller bombed at the box office, but it was inspired by a real-world disaster: Producer Andrew Wight was leading an expedition in a remote cave system in Australia when a freak storm made the entrance collapse. But the real-life story differed in a few key places: Everyone in real life survived, and none of the actual people had to endure any ham-fisted father-son sparring and by-the-numbers dialog.

The 3D cave-diving thriller bombed at the box office, but it was inspired by a real-world disaster: Producer Andrew Wight was leading an expedition in a remote cave system in Australia when a freak storm made the entrance collapse. But the real-life story differed in a few key places: Everyone in real life survived, and none of the actual people had to endure any ham-fisted father-son sparring and by-the-numbers dialog. (Universal Pictures)

The 3D cave-diving thriller bombed at the box office, but it was inspired by a real-world disaster: Producer Andrew Wight was leading an expedition in a remote cave system in Australia when a freak storm made the entrance collapse. But the real-life story differed in a few key places: Everyone in real life survived, and none of the actual people had to endure any ham-fisted father-son sparring and by-the-numbers dialog.